Solved

units...

Posted on 1998-09-23
6
422 Views
Last Modified: 2010-07-27
I have used the menu function "Project->Add To Project" to add another unit (somename.pas). How do I access the functions of this new unit from my other units (especially the one with the form)?
0
Comment
Question by:lar_jens
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
6 Comments
 
LVL 1

Author Comment

by:lar_jens
ID: 1340725
Edited text of question
0
 
LVL 4

Accepted Solution

by:
itamar earned 50 total points
ID: 1340726
Hi lar_jens,

You must add the unit name to the Uses clause of the unit you want to "call" the functions.

You also (and it's better) to include a Uses clause just after the Implementation reserved word.

Example:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, YOURUNIT;

type
.


OR

.
implementation

{$R *.DFM}

uses YOURUNIT;

procedure TForm1.FormCreate(Sender: TObject);
.

IHTH,
Itamar

P.S.: Any doubts, place a comment before rejecting the answer.
0
 
LVL 1

Expert Comment

by:saam
ID: 1340727
Unit1 can use YOURUNIT by doing like itamar said.

tip.
if Unit1 uses YOURUNIT then YOURUNIT can not use Unit1.

(it would create a cyclical dependency. neither unit can be compiled without the other one being present.)
0
Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 2

Expert Comment

by:kjteng
ID: 1340728
Hi!
"if Unit1 uses YOURUNIT then YOURUNIT can not use Unit1." - This statement is only partly true.

If you need to use Unit1 in YourUnit then you should place the statement "uses Unit1;" in the implementation section of yourUnit.





0
 
LVL 10

Expert Comment

by:viktornet
ID: 1340729
Hi all!

kjteng is absolutly right!

//Viktor
0
 
LVL 1

Expert Comment

by:saam
ID: 1340730
hello kjteng!
yes, you are right. it actually works in delphi. i did not know. sorry.
(in turbo pascal it is not permitted that two units uses each other.)
0

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

The uses clause is one of those things that just tends to grow and grow. Most of the time this is in the main form, as it's from this form that all others are called. If you have a big application (including many forms), the uses clause in the in…
Introduction Raise your hands if you were as upset with FireMonkey as I was when I discovered that there was no TListview.  I use TListView in almost all of my applications I've written, and I was not going to compromise by resorting to TStringGrid…
This video Micro Tutorial shows how to password-protect PDF files with free software. Many software products can do this, such as Adobe Acrobat (but not Adobe Reader), Nuance PaperPort, and Nuance Power PDF, but they are not free products. This vide…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …

690 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question